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22040320 = 28567257
BaseRepresentation
bin101010000010…
…0111100000000
31112110202122011
41110010330000
521120242240
62104222304
7355224331
oct124047400
945422564
1022040320
1111494245
12746a994
134749013
142cda288
151e056ea
hex1504f00

22040320 has 72 divisors (see below), whose sum is σ = 53789904. Its totient is φ = 8650752.

The previous prime is 22040303. The next prime is 22040353. The reversal of 22040320 is 2304022.

It is a self number, because there is not a number n which added to its sum of digits gives 22040320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85632 + ... + 85888.

It is an arithmetic number, because the mean of its divisors is an integer number (747082).

Almost surely, 222040320 is an apocalyptic number.

22040320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22040320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26894952).

22040320 is an abundant number, since it is smaller than the sum of its proper divisors (31749584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22040320 is an equidigital number, since it uses as much as digits as its factorization.

22040320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 22040320 is about 4694.7119187443. The cubic root of 22040320 is about 280.3750077270.

Adding to 22040320 its reverse (2304022), we get a palindrome (24344342).

The spelling of 22040320 in words is "twenty-two million, forty thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 67 80 128 134 160 256 257 268 320 335 514 536 640 670 1028 1072 1280 1285 1340 2056 2144 2570 2680 4112 4288 5140 5360 8224 8576 10280 10720 16448 17152 17219 20560 21440 32896 34438 41120 42880 65792 68876 82240 85760 86095 137752 164480 172190 275504 328960 344380 551008 688760 1102016 1377520 2204032 2755040 4408064 5510080 11020160 22040320